via this listing
Additional Perfect Circuit listings
"New backlit display installed
Sycologic upgrade card installed"
You can find some info on the Sycologic upgrade in this older post.
Thursday, November 06, 2025
Yamaha DX7 Digital FM Keyboard Synthesizer SN 91289 w/ Sycologic Upgrade Card
Note: links to listings are affiliate links for which the site may be compensated.
via this listing
Additional Perfect Circuit listings
"New backlit display installed
Sycologic upgrade card installed"
You can find some info on the Sycologic upgrade in this older post.
via this listing
Additional Perfect Circuit listings
"New backlit display installed
Sycologic upgrade card installed"
You can find some info on the Sycologic upgrade in this older post.
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
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